CN109342566A - A kind of disc insulator defects detection positioning device and method based on supersonic guide-wave - Google Patents
A kind of disc insulator defects detection positioning device and method based on supersonic guide-wave Download PDFInfo
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- CN109342566A CN109342566A CN201811399799.0A CN201811399799A CN109342566A CN 109342566 A CN109342566 A CN 109342566A CN 201811399799 A CN201811399799 A CN 201811399799A CN 109342566 A CN109342566 A CN 109342566A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a kind of disc insulator defects detection positioning device and method based on supersonic guide-wave, timing control unit connect the instruction for receiving host computer with host computer, pumping signal generating unit connect the pumping signal for generating required parameter with timing control unit, power amplifier module is connect for pumping signal to be filtered out direct current biasing and is amplified with pumping signal generating unit, several excitation channels connect with power amplifier module and are arranged on the upside of disc insulator for inspiring Lamb wave, several receiving channels are arranged on the downside of disc insulator for receiving Lamb wave and being converted into electric signal, pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo signal processing unit is connect for detection filter with pre-amplifying module and timing control unit.The present invention judges the position of defect, realizes the on-line checking of disc insulator while detecting disc insulator with the presence or absence of defect.
Description
Technical field
The present invention relates to a kind of defects of insulator detection positioning device and method, especially a kind of basins based on supersonic guide-wave
Formula defects of insulator detects positioning device and method.
Background technique
Power transmission network construction is the important directions of national strategy development, develops UHV transmission and has been included in China long-term
Development plan, it will important influence is generated to the following power transmission and transformation field.China has built very long extra-high voltage and has handed at present
Flow transmission line of electricity.Switchgear selected by UHV transmission line at present, most of is gas-insulated stacked switch equipment.
Since the influence of, high reliablity small with occupied area, service life length, climate condition is compared with small, maintenance work is few, device knot
Structure is compact and the characteristics of being easily installed, therefore is suitable for large-scale power hinge, in region with a varied topography or narrow topography
It is also convenient for applying.It is as the important equipment run in electric system, once the normal of electric system will be will affect by breaking down
Power supply causes huge economic loss and undesirable social influence.Disc insulator is as core building block, in extra-high piezoelectricity
It will necessarily be widely applied in net construction, therefore high requirement is proposed to its safe and stable operation.Currently, to disc insulator
Detection is carried out to have a very big significance.
Conventional mainly includes chemical measure, optical detection, pulse for the non-destructive testing technology of disc insulator
Current method, superfrequency method etc..These lossless detection methods theoretically all have feasibility for the defects detection of disc insulator,
However in production application, every kind of method has a respective limitation, for example chemical measure analytical cycle is longer, needs several
Hour even several days；Optical detection higher cost；Pulse current method is not suitable for complicated electromagnetic environment；Superfrequency method cannot
Carry out quantitative detection.Therefore, it researches and develops and a kind of to be simple and efficient, low cost, can be realized defects detection is carried out to disc insulator
System becomes one of the hot spot of current research.
Guided wave makes it suitable for disc insulator defect to the advantages that weld defect control, single-point-excitation, small, energy is big decaying with it
Detect work.However China is less for the research of disc insulator supersonic guide-wave non-destructive testing technology at present.Shandong University
Tang Hemei is proposed in " research of the GIS partial discharge typical defect type flash-over characteristic based on superfrequency method " using special
Then the method that high-frequency method carries out the fault detection of disc insulator defect is using main problem existing for superfrequency method: outer
It is low to set formula transducer sensitivity, and will receive the electromagnetic interference influences such as ambient enviroment mobile phone signal, it is necessary to take effective shielding
Measure；In addition, this method can not achieve quantitative detection, it is unable to measure the size of shelf depreciation Apparent discharge magnitude, thus can not
Judge defect severity, is the biggest obstacle of its application.Existing technology works for disc insulator defect fault detection,
There is no it is a kind of rapidly and efficiently, scientific accurate detection method and system.
Summary of the invention
The disc insulator defects detection based on supersonic guide-wave that technical problem to be solved by the invention is to provide a kind of is fixed
Position device and method, high sensitivity, decaying is small, can position.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of disc insulator defects detection positioning device based on supersonic guide-wave, it is characterised in that: comprising timing control unit,
If pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, pre-amplifying module and
Dry receiving channel, timing control unit connect the instruction for receiving host computer with host computer, pumping signal generating unit and when
Sequence control unit connects the pumping signal for generating required parameter, and power amplifier module connect use with pumping signal generating unit
In pumping signal is filtered out direct current biasing and is amplified, several excitation channels connect with power amplifier module and benzvalene form insulation are arranged in
Sub- upside is arranged on the downside of disc insulator for inspiring Lamb wave, several receiving channels for receiving Lamb wave and being converted into
Electric signal, pre-amplifying module are connect for amplifying electric signal with several receiving channels, echo signal processing unit with
Pre-amplifying module is connected with timing control unit for detection filter.
Further, several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave excitations pass
Sensor is uniformly distributed at the path on disc insulator convex surface.
Further, several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-waves receive
Sensor is uniformly distributed at the major diameter on disc insulator convex surface.
Further, the supersonic guide-wave receiving sensor is piezo ultrasound transducers, electromagnetic ultrasonic transducer or monocrystalline
Probe.
Further, the pumping signal generating unit includes TMS320VC2812 chip U1 and AD9854 chip U2, U1
D0-D7 foot successively connect respectively with the D0-D7 foot of U2, the A0-A5 foot of U1, which is distinguished, successively to be connect with the A0-A5 foot of U2, U1's
WRB foot successively connect with the WRB foot of U2 respectively, the CLKIN foot of U2 with have a source crystal oscillator connection, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot exports SinOut1, SinOut2, CosOut1, CosOut2 signal respectively, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot connects be grounded after one group of in parallel capacitor and resistance respectively.
Further, the power amplifier module includes 1 foot connection one end resistance R1 and the capacitor of AD830 chip U3, U3
The one end C1, the capacitor C1 other end input SinOut1 signal, and 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, capacitor C2 are another
One end inputs SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and electricity
Hinder the one end R4, the resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, electricity
R6 other end ground connection is hindered, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 of U3 is another
It holds and exports Out signal.
Further, the pre-amplifying module includes that 1 foot of AD830 chip U4, U4 input VX1 signal, and 2 feet of U4 are defeated
Enter VX2 signal, 8 feet of U4 connect positive pole, 3 feet connection one end resistance R7 of U4 and the one end resistance R8, the resistance R7 other end
It is grounded with the resistance R8 other end, 5 feet of 4 feet connection one end resistance R9 of U4 and the one end resistance R10, U4 connect power cathode, U4
The 7 feet connection resistance R9 other end, the one end resistance R11 and the one end capacitor C3, it is simultaneously defeated that the capacitor C3 other end connects the one end resistance R12
VOA1 signal out, the resistance R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
Further, the echo signal processing unit include AD835 chip U5, U5 7 feet connection the one end resistance R13 and
The one end capacitor C4, the capacitor C4 other end input SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and capacitor
The one end C5, the capacitor C5 other end input SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection,
1 foot of U5 inputs Uin signal, the 2 feet ground connection of U5, and 3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and electricity
It hinders the one end R16, the 5 feet connection resistance R15 other end of U5 and the one end resistance R17 and exports Ux or Uy signal, the resistance R16 other end
It is grounded with the resistance R17 other end, 6 feet of U5 connect positive pole.
A kind of detection localization method of the disc insulator defects detection positioning device based on supersonic guide-wave, it is characterised in that
It comprises the steps of:
Step 1: detecting the disc insulator under health status, using 12 collected signals of receiving sensor as
Reference signal, extracts the peak value of 12 first wave packet of roadbed calibration signal respectively, and is denoted as A1、A2、…、A12；
Step 2: detecting any disc insulator, obtains 12 tunnels and receives signal, extracts 12 tunnels respectively and receives signal first
The peak value of a wave packet, and it is denoted as A1 ’、 A2 ’、…、 A12 ’；
Step 3: 12 tunnels are calculated separately and receive attenuation rate of the signal relative to reference signal:
η1=(A1-A1 ’)/A1
η2=(A2-A2 ’)/A2
η12=(A12-A12 ’)/A12
Step 4: certain is all the way if it exists or the attenuation rate of multiple signals is more than secure threshold S, then determines that the disc insulator exists
Defect.
Further, disc insulator is uniformly divided into 12 fan-shaped regions, 12 receiving sensors are located at each
The axial location in region compares the size of 12 road receiving signal attenuation rates, and the region where the maximum channel of attenuation rate is to lack
Position where falling into.
Compared with prior art, the present invention having the following advantages that and effect: the present invention, can by ultrasonic guide wave flaw detection technology
To judge the position of defect, realize the online inspection of disc insulator while detecting disc insulator with the presence or absence of defect
Survey, and analyze and improve for the causes of defects of disc insulator and data basis is provided, at the same its with high sensitivity, decay it is small,
Orientable advantage, it is convenient that the variation of disc insulator geometry and physical characteristic is detected.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of disc insulator defects detection positioning device based on supersonic guide-wave of the invention.
Fig. 2 is the circuit diagram of pumping signal generating unit of the invention.
Fig. 3 is the circuit diagram of power amplifier module of the invention.
Fig. 4 is the circuit diagram of pre-amplifying module of the invention.
Fig. 5 is the circuit diagram of echo signal processing unit of the invention.
Fig. 6 is the arrangement schematic diagram of supersonic guide-wave sensor array of the invention and the signal of disc insulator surface subregion
Figure.
Specific embodiment
Below by embodiment, the present invention is described in further detail, following embodiment be explanation of the invention and
The invention is not limited to following embodiments.
As shown in Figure 1, a kind of disc insulator defects detection positioning device based on supersonic guide-wave of the invention, when including
Sequence control unit, pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, preceding storing
Big module and several receiving channels, timing control unit connect the instruction for receiving host computer, pumping signal hair with host computer
Raw unit connect the pumping signal for generating required parameter with timing control unit, and power amplifier module and pumping signal occur
Unit is connected for pumping signal to be filtered out direct current biasing and is amplified, and several excitation channels connect and are arranged with power amplifier module
For inspiring Lamb wave on the upside of disc insulator, several receiving channels are arranged on the downside of disc insulator for receiving Lamb
Wave is simultaneously converted into electric signal, and pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo-signal
Processing unit is connect for detection filter with pre-amplifying module and timing control unit.
Several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave stimulus sensors are uniformly distributed in
At the path on disc insulator convex surface.Several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-waves connect
Sensor is received to be uniformly distributed at the major diameter on disc insulator convex surface.Supersonic guide-wave receiving sensor be piezo ultrasound transducers,
Electromagnetic ultrasonic transducer or single crystal probe.
As shown in Fig. 2, pumping signal generating unit includes TMS320VC2812 chip U1 and AD9854 chip U2, U1's
D0-D7 foot is successively connect with the D0-D7 foot of U2 respectively, and the A0-A5 foot of U1 is successively connect with the A0-A5 foot of U2 respectively, the WRB of U1
Foot successively connect with the WRB foot of U2 respectively, the CLKIN foot of U2 with have a source crystal oscillator connection, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot exports SinOut1, SinOut2, CosOut1, CosOut2 signal respectively, IOUT1, OUT1B of U2, IOUT2,
IOUT2B foot connects be grounded after one group of in parallel capacitor and resistance respectively.
As shown in figure 3, power amplifier module includes 1 foot connection one end resistance R1 and the capacitor C1 mono- of AD830 chip U3, U3
End, the capacitor C1 other end input SinOut1 signal, 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, the capacitor C2 other end
Input SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and resistance R4
One end, the resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, resistance R6
Other end ground connection, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 other end of U3 is simultaneously
Export Out signal.
As shown in figure 4,1 foot that pre-amplifying module includes AD830 chip U4, U4 inputs VX1 signal, the 2 feet input of U4
VX2 signal, 8 feet of U4 connect positive pole, 3 feet connection one end resistance R7 of U4 and the one end resistance R8, the resistance R7 other end and
Resistance R8 other end ground connection, 4 feet connection one end resistance R9 of U4 and the one end resistance R10, the 5 feet connection power cathode of U4, the 7 of U4
Foot connects the resistance R9 other end, the one end resistance R11 and the one end capacitor C3, and capacitor C3 other end connection one end resistance R12 simultaneously exports
VOA1 signal, the resistance R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
As shown in figure 5, echo signal processing unit includes 7 feet connection one end resistance R13 and the electricity of AD835 chip U5, U5
Hold the one end C4, the capacitor C4 other end inputs SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and capacitor C5
One end, the capacitor C5 other end input SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection, U5
1 foot input Uin signal, the 2 feet ground connection of U5,3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and resistance
The one end R16, U5 5 feet connection the resistance R15 other end and the one end resistance R17 simultaneously export Ux or Uy signal, the resistance R16 other end and
6 feet of resistance R17 other end ground connection, U5 connect positive pole.
The operation principle of the present invention is that host computer issues instruction, signal parameter control word is written by DSP control unit
In the TMS320F2812 cake core of pumping signal generating unit, clock arrives when updated, needed for pumping signal generating unit generates
The pumping signal of parameter, after power amplifier module filters out direct current biasing and amplifies while 4 supersonic guide-wave excitations of input sense
Device inspires Lamb wave in disc insulator, after Lamb wave is propagated in disc insulator, then simultaneously by 8 supersonic guide-waves
Receiving sensor receives and is converted into electric signal, after using the amplification of the pre-amplifying module of broadband differential amplifier AD830, then
Detection filter processing is carried out by echo signal processing unit, final detection signal is obtained after DSP control unit is modulated simultaneously
Back to host computer.
A kind of detection localization method of the disc insulator defects detection positioning device based on supersonic guide-wave includes following step
It is rapid:
Step 1: detecting the disc insulator under health status, using 12 collected signals of receiving sensor as
Reference signal first acquires reference signal on the disc insulator with healthy structure, as shown in fig. 6, needing first to use when experiment
Epoxy glue couples 16 supersonic guide-wave sensors in the convex side of disc insulator, 4 at small-and-middle diameter, for the excitation of guided wave,
Reception 12 at major diameter, for guided wave.4 supersonic guide-wave actuated sensors inspire Lamb in disc insulator simultaneously
Wave, 12 supersonic guide-wave receiving sensors distinguish receives echo-signal, and as reference signal, extract 12 roadbed calibration signals respectively
The peak value of first wave packet, and it is denoted as A1、A2、…、A12；
Step 2: by the position of supersonic guide-wave sensor that benzvalene form is exhausted when carrying out on-line checking to practical disc insulator
Edge is uniformly divided into 12 fan-shaped regions, and 12 receiving sensors are located at the axial location in each region, to any benzvalene form
Insulator is detected, and is obtained 12 tunnels and is received signal, is extracted 12 tunnels respectively and is received the peak value of first wave packet of signal, and is denoted as
A1 ’、 A2 ’、…、 A12 ’；
Step 3: 12 tunnels are calculated separately and receive attenuation rate of the signal relative to reference signal:
η1=(A1-A1 ’)/A1
η2=(A2-A2 ’)/A2
η12=(A12-A12 ’)/A12
Step 4: certain is all the way if it exists or the attenuation rate of multiple signals is more than secure threshold S, then determines that the disc insulator exists
Defect.
Disc insulator is uniformly divided into 12 fan-shaped regions, 12 receiving sensors are located at the axis in each region
Position compares the size of 12 road receiving signal attenuation rates, and the region where the maximum channel of attenuation rate is the position where defect
It sets.
The present invention by ultrasonic guide wave flaw detection technology, can while detecting disc insulator with the presence or absence of defect,
It realizes the on-line checking of disc insulator, and is mentioned for the analysis of the causes of defects of disc insulator and improvement in the position for judging defect
For data basis, while it has the advantages that high sensitivity, decaying are small, orientable, convenient to disc insulator geometry and physics
The variation of characteristic is detected.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should belong to guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (10)
1. a kind of disc insulator defects detection positioning device based on supersonic guide-wave, it is characterised in that: include timing control list
Member, pumping signal generating unit, power amplifier module, several excitation channels, echo signal processing unit, pre-amplifying module and
Several receiving channels, timing control unit connect the instruction for receiving host computer with host computer, pumping signal generating unit with
Timing control unit connects the pumping signal for generating required parameter, and power amplifier module is connect with pumping signal generating unit
For pumping signal to be filtered out direct current biasing and is amplified, several excitation channels are connect with power amplifier module and that benzvalene form is arranged in is exhausted
For inspiring Lamb wave on the upside of edge, several receiving channels are arranged on the downside of disc insulator for receiving Lamb wave and converting
For electric signal, pre-amplifying module is connect for amplifying electric signal with several receiving channels, echo signal processing unit
It is connect with pre-amplifying module and timing control unit for detection filter.
2. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: several excitation channels use 4 supersonic guide-wave stimulus sensors, and 4 supersonic guide-wave stimulus sensors are uniformly distributed
At the path on disc insulator convex surface.
3. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: several receiving channels use 12 supersonic guide-wave receiving sensors, and 12 supersonic guide-wave receiving sensors are uniformly divided
It is distributed at the major diameter on disc insulator convex surface.
4. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 3, feature
Be: the supersonic guide-wave receiving sensor is piezo ultrasound transducers, electromagnetic ultrasonic transducer or single crystal probe.
5. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the pumping signal generating unit includes the D0-D7 foot difference of TMS320VC2812 chip U1 and AD9854 chip U2, U1
It is successively connect with the D0-D7 foot of U2, the A0-A5 foot of U1 is successively connect with the A0-A5 foot of U2 respectively, and the WRB foot difference of U1 is successively
It is connect with the WRB foot of U2, the CLKIN foot of U2 and has a source crystal oscillator connection, IOUT1, OUT1B, IOUT2, IOUT2B foot difference of U2
SinOut1, SinOut2, CosOut1, CosOut2 signal are exported, IOUT1, OUT1B, IOUT2, IOUT2B foot of U2 is gone here and there respectively
It is grounded after joining one group of capacitor and resistance in parallel.
6. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the power amplifier module includes 1 foot connection one end resistance R1 and the one end capacitor C1 of AD830 chip U3, U3, capacitor C1
The other end inputs SinOut1 signal, 2 feet connection one end resistance R2 of U3 and the one end capacitor C2, the input of the capacitor C2 other end
SinOut2 signal, the resistance R1 other end and resistance R2 other end ground connection, 3 feet connection one end resistance R3 of U3 and the one end resistance R4,
The resistance R3 other end and resistance R4 other end ground connection, 4 feet connection one end resistance R5 of U3 and the one end resistance R6, the resistance R6 other end
Ground connection, 5 feet of U3 connect power cathode, and 8 feet of U3 connect positive pole, and the 7 feet connection resistance R5 other end of U3 simultaneously exports Out
Signal.
7. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the pre-amplifying module includes the 1 foot input VX1 signal of AD830 chip U4, U4, and 2 feet of U4 input VX2 signal, U4
8 feet connect positive pole, U4 3 feet connection the one end resistance R7 and the one end resistance R8, the resistance R7 other end and resistance R8 it is another
End ground connection, 4 feet connection one end resistance R9 of U4 and the one end resistance R10,5 feet of U4 connect power cathode, and 7 feet of U4 connect resistance
The R9 other end, the one end resistance R11 and the one end capacitor C3, capacitor C3 other end connection one end resistance R12 simultaneously export VOA1 signal, electricity
Hinder the R10 other end, the resistance R11 other end and resistance R12 other end ground connection.
8. a kind of disc insulator defects detection positioning device based on supersonic guide-wave described in accordance with the claim 1, feature
Be: the echo signal processing unit includes 7 feet connection one end resistance R13 and the one end capacitor C4 of AD835 chip U5, U5,
The capacitor C4 other end inputs SinOut1 or CosOut1 signal, 8 feet connection one end resistance R14 of U5 and the one end capacitor C5, capacitor
The C5 other end inputs SinOut2 or CosOut2 signal, the resistance R13 other end and resistance R14 other end ground connection, the 1 foot input of U5
Uin signal, the 2 feet ground connection of U5,3 feet of U5 connect power cathode, 4 feet connection one end resistance R15 of U5 and the one end resistance R16,
The 5 feet connection resistance R15 other end of U5 and the one end resistance R17 simultaneously export Ux or Uy signal, the resistance R16 other end and resistance R17
6 feet of other end ground connection, U5 connect positive pole.
9. a kind of a kind of described in any item disc insulator defects detection positioning devices based on supersonic guide-wave of claim 1-8
Detection localization method, it is characterised in that comprise the steps of:
Step 1: detecting the disc insulator under health status, using 12 collected signals of receiving sensor as
Reference signal, extracts the peak value of 12 first wave packet of roadbed calibration signal respectively, and is denoted as A1、A2、…、A12；
Step 2: detecting any disc insulator, obtains 12 tunnels and receives signal, extracts 12 tunnels respectively and receives signal first
The peak value of a wave packet, and it is denoted as A1 ’、 A2 ’、…、 A12 ’；
Step 3: 12 tunnels are calculated separately and receive attenuation rate of the signal relative to reference signal:
η1=(A1-A1 ’)/A1
η2=(A2-A2 ’)/A2
...
η12=(A12-A12 ’)/A12
Step 4: certain is all the way if it exists or the attenuation rate of multiple signals is more than secure threshold S, then determines that the disc insulator exists
Defect.
10. detecting localization method according to claim 9, it is characterised in that: disc insulator is uniformly divided into 12 fans
Shape region, 12 receiving sensors are located at the axial location in each region, compare the size of 12 road receiving signal attenuation rates,
Region where the maximum channel of attenuation rate is the position where defect.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376286A (en) * | 2019-06-13 | 2019-10-25 | 国网浙江省电力有限公司电力科学研究院 | A kind of in-service disc insulator intelligent automation ultrasonic testing system and method |
| CN111122699A (en) * | 2019-11-22 | 2020-05-08 | 国家电网有限公司 | Ultrasonic flaw detection device for basin-type insulator of penetration type combined electrical apparatus |
| CN111324109A (en) * | 2020-03-16 | 2020-06-23 | 北京和利时系统工程有限公司 | Signal simulation system and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1189947A (en) * | 1982-11-01 | 1985-07-02 | Wilhelm Repplinger | Non-destructive, non-contact ultrasonic material testing method and apparatus |
| CA2250534A1 (en) * | 1997-11-26 | 1999-05-26 | Emerson Electric Co. | Ultrasonic comb probe array assembly |
| CN1978977A (en) * | 2006-12-01 | 2007-06-13 | 北京工业大学 | Supersonic guide-wave time reversion detection apparatus and method for defect of pipeline |
| CN105424802A (en) * | 2015-11-10 | 2016-03-23 | 华南理工大学 | Ultrasonic guided-wave detecting system for defect of composite insulator and detecting method of ultrasonic guided-wave detecting system |
| WO2017080133A1 (en) * | 2015-11-13 | 2017-05-18 | 华中科技大学 | Open magnetic circuit-based method and device for detecting magnetostrictive guided-wave |
| CN106950281A (en) * | 2017-03-29 | 2017-07-14 | 国网浙江省电力公司电力科学研究院 | High-tension cable aluminium sheath detecting system and detection method based on mangneto formula torsional wave |
| CN107917964A (en) * | 2017-11-29 | 2018-04-17 | 陕西易阳科技有限公司 | A kind of disc insulator damage detection system |
| WO2018133179A1 (en) * | 2017-01-18 | 2018-07-26 | 中特检科技发展(北京)有限公司 | Multi-mode electromagnetic ultrasonic and magnetic flux leakage detection method, apparatus and system, and sensor |
-
2018
- 2018-11-22 CN CN201811399799.0A patent/CN109342566B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1189947A (en) * | 1982-11-01 | 1985-07-02 | Wilhelm Repplinger | Non-destructive, non-contact ultrasonic material testing method and apparatus |
| CA2250534A1 (en) * | 1997-11-26 | 1999-05-26 | Emerson Electric Co. | Ultrasonic comb probe array assembly |
| CN1978977A (en) * | 2006-12-01 | 2007-06-13 | 北京工业大学 | Supersonic guide-wave time reversion detection apparatus and method for defect of pipeline |
| CN105424802A (en) * | 2015-11-10 | 2016-03-23 | 华南理工大学 | Ultrasonic guided-wave detecting system for defect of composite insulator and detecting method of ultrasonic guided-wave detecting system |
| WO2017080133A1 (en) * | 2015-11-13 | 2017-05-18 | 华中科技大学 | Open magnetic circuit-based method and device for detecting magnetostrictive guided-wave |
| WO2018133179A1 (en) * | 2017-01-18 | 2018-07-26 | 中特检科技发展(北京)有限公司 | Multi-mode electromagnetic ultrasonic and magnetic flux leakage detection method, apparatus and system, and sensor |
| CN106950281A (en) * | 2017-03-29 | 2017-07-14 | 国网浙江省电力公司电力科学研究院 | High-tension cable aluminium sheath detecting system and detection method based on mangneto formula torsional wave |
| CN107917964A (en) * | 2017-11-29 | 2018-04-17 | 陕西易阳科技有限公司 | A kind of disc insulator damage detection system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376286A (en) * | 2019-06-13 | 2019-10-25 | 国网浙江省电力有限公司电力科学研究院 | A kind of in-service disc insulator intelligent automation ultrasonic testing system and method |
| CN110376286B (en) * | 2019-06-13 | 2021-08-27 | 国网浙江省电力有限公司电力科学研究院 | Intelligent automatic ultrasonic detection system and method for in-service basin-type insulator |
| CN111122699A (en) * | 2019-11-22 | 2020-05-08 | 国家电网有限公司 | Ultrasonic flaw detection device for basin-type insulator of penetration type combined electrical apparatus |
| CN111122699B (en) * | 2019-11-22 | 2022-04-05 | 国家电网有限公司 | Ultrasonic flaw detection device for basin-type insulator of penetration type combined electrical apparatus |
| CN111324109A (en) * | 2020-03-16 | 2020-06-23 | 北京和利时系统工程有限公司 | Signal simulation system and method |
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